I've been to several places:
- Jimmy Woo - A trendy bar in a touristy area (the leidseplein square), fancy sofas, must buy vodka bottle to have a seat ;) - It's not the typical dutch place.. I didn't like it too much. In this area you'll find plenty of bars (The Bourbon Whiskey bar, Jazz house, piano bar which runs shows etc..)
- Albert Cuyp area: in this area you'll find many local bars with neighborhood atmosphere... mostly populated by young locals, not many tourists.